Finding the Fourth Proportional to 31,152.12, 42,989.92 and 17,726

Step by Step Solution

1. Step 1: Write the proportion equation
   31,152.12 : 42,989.92 = 17,726 : x
2. Step 2: Convert to fraction form
   31,152.12/42,989.92 = 17,726/x
3. Step 3: Cross multiply
   31,152.12x = 42,989.92 × 17,726
4. Step 4: Simplify right side
   31,152.12x = 762,039,321.92
5. Step 5: Solve for x
   x = 762,039,321.92/31,152.12
6. Step 6: Final answer
   x = 24,461.88